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08-08-2018 19:44

Andgelo Mombert

Bonsoir à tous,Apothécies de 0,5-1 mm de diamèt

15-08-2018 21:56

Andgelo Mombert

Bonsoir à tous,Sur pétioles et nervures de feuil

16-08-2018 16:08

Blasco Rafael Blasco Rafael

Hola, he recogido esta muestra sobre tronco de Abi

15-08-2018 15:45

Gernot Friebes

Hi,we collected this Scutellinia a few days ago on

11-08-2018 19:10

Sven Heinz Sven Heinz

Hello together, does anyone have any idea what th

15-08-2018 10:24

Gernot Friebes

Hi,found on the bark of an old Picea tree at appro

13-08-2018 09:43

Pintos Angel Pintos Angel

hello, anybody has?Barr ME, Cannon PF (1994) Calos

08-08-2018 12:43

Castillo Joseba Castillo Joseba

De ayer en bosque de Fagus, entre el musgo sobre l

12-08-2018 10:01

Tapio Kekki

These were growing on gravel of a creek. Place is

11-08-2018 01:19

Matthias Mann Matthias Mann

Dear Specialists, on Alnus Stem I found Chlotoci

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tiny white cups on the oak
Zsolt Sütö, 31-01-2018 23:44
Hi everybody!

I'm an amateur mushroom hunter. I like fungi. Sometimes I try to identify the fungi...


I know about the fungi:


Substrate: oak (probably Quercus robur). The white fruit body diameter is between 1 and 5 mm. The cups have a small stick. The fruit is dried yellow.
Spore 7.5-10,8 x 1.8-3,1 ascus 45-63 x 3.7-5.7, KI3 +, there are hairs.


Where do I look for the solution? What is your idea?


Thank you in advance.

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Michel Hairaud, 01-02-2018 11:32
Michel Hairaud
Re : tiny white cups on the oak
Hi Zsolt,

Substrate  and habit of your collection could fit Dasyscyphella nivea, a common species on this substrate  but I cannot be sure from your pictures whether hairs are soft or not in the last cells.

Amiiés
Michel
Hans-Otto Baral, 01-02-2018 12:49
Hans-Otto Baral
Re : tiny white cups on the oak
Hi both of you

good photos! 

my first idea was also D. nivea but I think it is Lachnum brevipilosum, for two reasons:
- the asci are without croziers (well figured!)
- the hairs are rather short and I see them granulated and not narrowed above .

The last hair photo is very good, it shows them in the living state. i suggest to use onyl exceptionally staining reagents, because in L. brevipilosum characteristic strongly refractive vacuolar (VBs) guttules are typical, which are very sensitive to pressure or chemicals.

You should do photos of living paraphyses and also look for more hairs whether these drops occur in the lower part of the hairs. These VBs are responsible for reddening of the apothecia when senescent.

Zotto

Zsolt Sütö, 01-02-2018 19:28
Re : tiny white cups on the oak
Dear Michel and Hans-Otto!

Thank you very much for your help and suggestions!

Sorry, Asco terms sometimes also cause problems of me. It is difficult to understand the answers as a beginner. I just heard about croziers, VBs... I have a small backlog :-)


I'm trying to find the living hair and paraphyses better. I hope to find fresh fruitbodies in the woods.


Thanks again!


best regards


Zsolt

Hans-Otto Baral, 01-02-2018 20:50
Hans-Otto Baral
Re : tiny white cups on the oak
take care, these fungi are tricky. Externally they look very much alike but belong to different species. They can even grow together. Vacuolar bodies (VBs) are an important character especially in Helotiales. But you usually do not find them in the current (earlier) literature
Michel Hairaud, 01-02-2018 21:39
Michel Hairaud
Re : tiny white cups on the oak
Yes , Zollo, tricky indeed !
Thanks . I had overlooked the hair tips thickness and did think there were croziers , especially in image 13.
Michel
Zsolt Sütö, 12-02-2018 21:06
Re : tiny white cups on the oak
Dear Michel and Hans-Otto!

Finding paraphyses and hairs is difficult, hard work and time-consuming.
The result of my search is shown in the images.

That's enough, or I'm looking for more hairs?
I got closer to the Lachnum brevipilosum?


Best regards
Zsolt

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Hans-Otto Baral, 12-02-2018 23:42
Hans-Otto Baral
Re : tiny white cups on the oak
Actually your 11. photo of the last series shows VB-guttules in the lower living cell. These would be seen in every hair and also in the paraphyses if the fungus is in good state and alive.
Zotto
Zsolt Sütö, 14-02-2018 08:51
Re : tiny white cups on the oak
Dear Zotto!

Thank you!

Now I know what the VB-guttules looks like, so it will be easier to look. I did not know exactly what to look for. (I'm completely new to the track..)

Zotto, you still think this mushroom can be a Lachnum brevipilosum?

Thanks again!

best regards
Zsolt
Hans-Otto Baral, 14-02-2018 09:21
Hans-Otto Baral
Re : tiny white cups on the oak
Yes I think so. Where did you collect it, in Hungary?
You can compare on my homepage the folder of that species:
go https://invivoveritas.de/ascomycetes-illustrations/
Then select 7f Helotiales, 8f Lachnaceae, then go to Lachnum and find brevipilosum.
Zotto
Zsolt Sütö, 14-02-2018 18:26
Re : tiny white cups on the oak
Dear Zotto!

Yes, I found it in Hungary, more specifically in Debrecen (Place name: Debrecen Nagyerdö).
I have not found Hungarian data yet.

Thank you for everything: information, advice, suggestions, links!

beast regards, Zsolt